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Key Responsibilities and Required Skills for Mulesoft Integration Developer

💰 $90,000 - $140,000

IntegrationAPI DevelopmentMulesoftIT

🎯 Role Definition

As a Mulesoft Integration Developer, you will lead the design, development, deployment and optimisation of end‑to‑end integration solutions using the MuleSoft Anypoint Platform. You’ll partner with business stakeholders, system architects and cross‑functional teams to gather requirements, translate them into robust APIs, connectors and integration flows. You will also ensure high standards of security, scalability, performance, and maintainability, driving the company’s digital transformation via seamless connectivity across on‑premises, cloud and hybrid systems.

📈 Career Progression

Typical Career Path

Entry Point From:

  • Integration Developer (Middleware)
  • API Developer / Web Services Developer
  • Software Engineer with ESB or Enterprise Integration background

Advancement To:

  • Senior Mulesoft Integration Developer
  • Integration Architect / MuleSoft Solutions Architect
  • Head of Integration / Director of API & Integration Platforms

Lateral Moves:

  • Cloud Integration Engineer
  • API Platform Engineer
  • DevOps / Platform Engineer

Core Responsibilities

Primary Functions

  1. Design, develop and implement enterprise integration solutions using MuleSoft Anypoint Platform according to business and technical requirements.
  2. Collaborate with business analysts, product owners and stakeholders to gather integration requirements and define API‑led connectivity strategy.
  3. Build and configure RESTful and SOAP‑based APIs, connectors, flows and message transformations using DataWeave, Anypoint Studio and associated MuleSoft components.
  4. Develop integrations between on‑premise, cloud and hybrid systems, ensuring seamless data flow and system interoperability.
  5. Implement and maintain API management, runtime governance, versioning, security policies and operational monitoring for the integration landscape.
  6. Perform unit, integration and regression testing of integration components (including MUnit) and assist QA teams to ensure solutions meet quality standards.
  7. Conduct code reviews, deploy through CI/CD pipelines, maintain version control (Git/Maven/Jenkins), and champion best practices for integration development.
  8. Optimise integration performance, scalability and reliability by tuning flows, applying caching strategies, load‑balancing, and message queuing patterns.
  9. Troubleshoot integration failures, root‑cause data or message errors, manage error‑handling, retry logic and logging to maintain business continuity.
  10. Migrate legacy middleware, ESB solutions or outdated point‑to‑point integrations to a modern API‑led architecture using MuleSoft.
  11. Design and maintain data models, schemas, mapping and transformations for JSON, XML, CSV or other data formats in flows and APIs.
  12. Lead workshops and design sessions with architects and stakeholders to define integration patterns, frameworks, reuse strategies, and service governance.
  13. Produce and maintain technical documentation: API specs (RAML/Swagger/OpenAPI), solution architecture, user guides and integration runbooks.
  14. Stay current with MuleSoft updates, emerging integration patterns (microservices, event‑driven, batch processing) and recommend improvements to the platform.
  15. Mentor junior developers, share tooling and knowledge, enforce coding standards, and raise the team’s integration engineering capability.
  16. Ensure integration solutions comply with security, data protection, regulatory, and governance requirements (e.g., OAuth 2.0, SSL/TLS, encryption, logging).
  17. Participate in agile/scrum teams: sprint planning, backlog grooming, releasing integration user stories, delivering iterative value.
  18. Monitor operational health of integrations: metrics, logs, error rates, throughput, and work with infrastructure or DevOps teams to maintain SLAs.
  19. Collaborate with vendors, third‑party systems, ERP/CRM platforms (e.g., Salesforce, SAP) and partner integrations to extend the application ecosystem.
  20. Manage integration lifecycle: scoping, estimation, deployment scheduling, release management and version maintenance of MuleSoft artefacts.

Secondary Functions

  • Support ad‑hoc integration or API requests, prototypes, PoCs and exploration of new use‑cases.
  • Contribute to the organisation’s integration roadmap, platform evolution and reuse strategy.
  • Translate business unit requirements into integration engineering tasks and priorities.
  • Participate in sprint planning, backlog refinement and agile ceremonies within the integration or middleware team.

Required Skills & Competencies

Hard Skills (Technical)

  • Strong hands‑on experience with MuleSoft Anypoint Platform (including Anypoint Studio, API Manager, Runtime Manager, Anypoint MQ, CloudHub).
  • Proficient in API design (RAML, OpenAPI/Swagger), REST, SOAP, JMS, JDBC, HTTP and enterprise integration patterns.
  • Skilled in DataWeave for data mapping and transformation, XML/JSON processing, CSV handling.
  • Solid programming experience in Java, J2EE, and familiarity with object‑oriented concepts and design patterns.
  • Experience with CI/CD tools and version control (Git, Jenkins, Maven), and knowledge of DevOps practices in integration deployments.
  • Knowledge of relational and NoSQL databases (Oracle, SQL Server, PostgreSQL, MongoDB) and integration of data sources.
  • Familiarity with cloud architectures (AWS, Azure, GCP), hybrid deployments, scalability and HA design in a middleware context.
  • Strong understanding of integration architecture: ESB, microservices, event‑driven, message routing, batching, error handling, sequencing.
  • Skilled in monitoring, logging and performance tuning of integrations: throughput, latency, error rates, SLAs.
  • Experience in enterprise systems integration (ERP, CRM, legacy systems) and migration of legacy middleware to modern API‑led architectures.

Soft Skills

  • Excellent analytical and problem‑solving mindset, able to translate complex business needs into robust technical solutions.
  • Effective communication skills – able to liaise with business stakeholders, architects, developers and external partners.
  • Strong organisational skills with ability to manage multiple tasks, deliverables and priorities in an agile environment.
  • Collaborative team player who mentors and supports others, fosters knowledge sharing and standards adoption.
  • Adaptable and proactive, continuously learning emerging integration technologies and shaping best‑practice frameworks.
  • High attention to detail with a focus on reliability, resilience and operational excellence of integration solutions.
  • Business‑oriented view: able to align technical integration work with broader strategic goals and deliver measurable value.

Education & Experience

Educational Background

Minimum Education:
Bachelor’s degree in Computer Science, Software Engineering, Information Systems or related discipline.
Preferred Education:
Master’s degree or certified credentials in integration technologies, API management platforms or MuleSoft certifications (e.g., MuleSoft Certified Developer – Level 1).
Relevant Fields of Study:

  • Computer Science
  • Software or Systems Engineering
  • Information Systems
  • Cloud/Integration Architecture

Experience Requirements

Typical Experience Range:
3‑5 years of experience in integration development, middleware or API/ESB work, including hands‑on MuleSoft platform usage.
Preferred:
5+ years of experience designing and implementing enterprise scale integration solutions using MuleSoft, and mentoring other developers or leading integration workstreams.

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